Spectroscopic Analysis of Au-Cu Alloy Nanoparticles of Various Compositions Synthesized by a Chemical Reduction Method

Table 3

UV-Visible spectral characteristics of Au-Cu alloy nanoparticles in different ratios.

S. number	Au : Cu	of Au	of Cu	Absorbance	/M^−1cm^−1	λmax/nm
1	3 : 1	0.7	0.25	0.93	284.23	490
2	2 : 1	0.6	0.33	0.85	220.53	495
3	1 : 1	0.5	0.5	0.65	186.66	500
4	1 : 2	0.4	0.6	0.5	143.68	530
5	1 : 3	0.3	0.7	0.33	116.89	555